/*
 * Copyright (c) 1995, 2004, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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/*
 * Licensed Materials - Property of IBM
 * RMI-IIOP v1.0
 * Copyright IBM Corp. 1998 1999  All Rights Reserved
 *
 */

package com.sun.corba.se.impl.util;

import java.rmi.Remote;
import java.rmi.NoSuchObjectException;
import java.rmi.server.RMIClassLoader;
import java.rmi.server.UnicastRemoteObject;
import org.omg.CORBA.BAD_PARAM;
import org.omg.CORBA.CompletionStatus;
import java.util.Properties;
import java.io.File;
import java.io.FileInputStream;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.net.MalformedURLException;
import com.sun.corba.se.impl.orbutil.GetPropertyAction;

/**
 * Utility methods for doing various method calls which are used
 * by multiple classes
 */
public class JDKBridge {

  /**
   * Get local codebase System property (java.rmi.server.codebase).
   * May be null or a space separated array of URLS.
   */
  public static String getLocalCodebase() {
    return localCodebase;
  }

  /**
   * Return true if the system property "java.rmi.server.useCodebaseOnly"
   * is set, false otherwise.
   */
  public static boolean useCodebaseOnly() {
    return useCodebaseOnly;
  }

  /**
   * Returns a class instance for the specified class.
   *
   * @param className the name of the class
   * @param remoteCodebase a space-separated array of urls at which the class might be found. May be
   * null.
   * @param loader a ClassLoader who may be used to load the class if all other methods fail.
   * @return the <code>Class</code> object representing the loaded class.
   * @throws throws ClassNotFoundException if class cannot be loaded.
   */
  public static Class loadClass(String className,
      String remoteCodebase,
      ClassLoader loader)
      throws ClassNotFoundException {

    if (loader == null) {
      return loadClassM(className, remoteCodebase, useCodebaseOnly);
    } else {
      try {
        return loadClassM(className, remoteCodebase, useCodebaseOnly);
      } catch (ClassNotFoundException e) {
        return loader.loadClass(className);
      }
    }
  }

  /**
   * Returns a class instance for the specified class.
   *
   * @param className the name of the class
   * @param remoteCodebase a space-separated array of urls at which the class might be found. May be
   * null.
   * @return the <code>Class</code> object representing the loaded class.
   * @throws throws ClassNotFoundException if class cannot be loaded.
   */
  public static Class loadClass(String className,
      String remoteCodebase)
      throws ClassNotFoundException {
    return loadClass(className, remoteCodebase, null);
  }

  /**
   * Returns a class instance for the specified class.
   *
   * @param className the name of the class
   * @return the <code>Class</code> object representing the loaded class.
   * @throws throws ClassNotFoundException if class cannot be loaded.
   */
  public static Class loadClass(String className)
      throws ClassNotFoundException {
    return loadClass(className, null, null);
  }

  private static final String LOCAL_CODEBASE_KEY = "java.rmi.server.codebase";
  private static final String USE_CODEBASE_ONLY_KEY = "java.rmi.server.useCodebaseOnly";
  private static String localCodebase = null;
  private static boolean useCodebaseOnly;

  static {
    setCodebaseProperties();
  }

  public static final void main(String[] args) {
    System.out.println("1.2 VM");

        /*
                 // If on 1.2, use a policy with all permissions.
                 System.setSecurityManager (new javax.rmi.download.SecurityManager());
                 String targetClass = "[[Lrmic.Typedef;";
                 System.out.println("localCodebase =  "+localCodebase);
                 System.out.println("Trying to load "+targetClass);
                 try {
                 Class clz = loadClass(targetClass,null,localCodebase);
                 System.out.println("Loaded: "+clz);
                 } catch (ClassNotFoundException e) {
                 System.out.println("Caught "+e);
                 }
        */
  }

  /**
   * Set the codebase and useCodebaseOnly properties. This is public
   * only for test code.
   */
  public static synchronized void setCodebaseProperties() {
    String prop = (String) AccessController.doPrivileged(
        new GetPropertyAction(LOCAL_CODEBASE_KEY)
    );
    if (prop != null && prop.trim().length() > 0) {
      localCodebase = prop;
    }

    prop = (String) AccessController.doPrivileged(
        new GetPropertyAction(USE_CODEBASE_ONLY_KEY)
    );
    if (prop != null && prop.trim().length() > 0) {
      useCodebaseOnly = Boolean.valueOf(prop).booleanValue();
    }
  }

  /**
   * Set the default code base. This method is here only
   * for test code.
   */
  public static synchronized void setLocalCodebase(String codebase) {
    localCodebase = codebase;
  }

  private static Class loadClassM(String className,
      String remoteCodebase,
      boolean useCodebaseOnly)
      throws ClassNotFoundException {

    try {
      return JDKClassLoader.loadClass(null, className);
    } catch (ClassNotFoundException e) {
    }
    try {
      if (!useCodebaseOnly && remoteCodebase != null) {
        return RMIClassLoader.loadClass(remoteCodebase,
            className);
      } else {
        return RMIClassLoader.loadClass(className);
      }
    } catch (MalformedURLException e) {
      className = className + ": " + e.toString();
    }

    throw new ClassNotFoundException(className);
  }
}
